/******************************************************************
 * Copyright (c) 2024 Huawei Technologies Co., Ltd.
 * installer is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 ******************************************************************/

package utils

import (
	"runtime"
)

const (
	LogicalCPUMultiple = 4
)

type GoRoutineLimit struct {
	ch chan int
}

func NewGoRoutineLimits() *GoRoutineLimit {
	return &GoRoutineLimit{ch: make(chan int, runtime.NumCPU()*LogicalCPUMultiple)}
}

func (g *GoRoutineLimit) Add() {
	g.ch <- 1
}

func (g *GoRoutineLimit) Done() {
	<-g.ch
}
